Borrowed money fueling US stock rally is getting more expensive

• Equity repo exposure at primary dealers surpassed $220 billion, a record high, with financing costs reaching historic levels relative to benchmark rates like SOFR
• U.S.-domiciled leveraged exchange-traded product assets nearly doubled to approximately $200 billion in the first quarter, driven primarily by technology and semiconductor-linked products
• Barclays estimates total hedge fund gross equity exposure at around $10 trillion, with leverage heavily concentrated in Information Technology sector stocks like Nvidia, Broadcom, and Micron

Summary: Borrowed Money Fueling US Stock Rally Getting More Expensive

The cost of borrowed money driving the U.S. stock rally is rising sharply, raising concerns about market sustainability. Primary dealers now hold record equity repo exposure exceeding $220 billion, while U.S.-domiciled leveraged exchange-traded product assets nearly doubled to approximately $200 billion in Q1 2026. Barclays estimates total hedge fund gross equity exposure at around $10 trillion.

Key Market Dynamics:

Rising demand for leveraged investments is straining major banks' balance-sheet capacity, pushing equity financing costs to record levels since late 2020. The spread between implied financing rates for S&P 500 total-return futures and SOFR (overnight lending rates) has reached unprecedented highs, excluding typical year-end periods.

Drivers of Demand:

The 2026 stock rally, propelled by AI-related spending on chips, has pushed the Nasdaq to 20 record closes this year. Strong inflows into technology and semiconductor-linked leveraged ETFs, combined with surging call-option activity following a recent ceasefire, have intensified pressure on dealer capacity. A 10% equity market rise creates roughly $1 trillion in additional financing demand.

Market Concentration Risk:

Morgan Stanley warns that leverage is concentrated in one sector: Information Technology, particularly chip firms like Nvidia, Broadcom, and Micron. Only this sector has outperformed the broader S&P 500 over the past three months.

Implications:

Analysts caution that elevated financing costs could make leveraged trades unprofitable, potentially accelerating market retreats if stock prices stall or decline. Martin Tobias of Morgan Stanley notes that equity funding costs serve as an early warning signal for changing financial conditions, with the S&P 500 struggling to break above its June 2 high of 7,621.